Some cuts need marintating some don't.
I love to make a flank steak that has had at least 24 hours in a dark sesame marinade then cook it on a real hot grill.
Now with a ribeye I like to do it the Italian way, simply season with salt and pepper, grill it up, while on the grill take a shallow pan put some good olive oil in it, fresh garlic and fresh rosemary that has been crushed up together, that hot steak hits that oil and you get a wonderful flavor and the smell is great.
Everyone has their way of grilling.